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<p>Potato cytoplasm type has been linked to fertility and disease resistance traits, making it an important consideration in potato breeding programs. Previous research has developed genetic markers to distinguish the six different cytoplasm types (P, T, W, D, A, and M). These markers were used to identify the different cytoplasm types present in the USDA-ARS Potato Variety Development Program for the Eastern U.S. Tetraploid families were predominantly type T, with a significant number of type D. Diploid families had a large proportion of type P, reflecting the contribution of <i>Solanum tuberosum</i> Group <i>Phureja</i>. Primary dihaploids, being derived from tetraploids, had a similar cytoplasm composition as the tetraploid families, predominantly type T and D. As has been previously reported, cytoplasm type was correlated with male fertility. The USDA-ARS Potato Variety Development Program for the Eastern U.S. will use the cytotype data to direct breeding efforts going forward.</p>

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Cytoplasmic Background of Diploid and Tetraploid Breeding Line Families at the USDA-ARS Potato Variety Development for the Eastern U.S.

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Noah Williams,
  • Zoe Colwell,
  • Diana Spencer,
  • Greg Kornelis,
  • Samantha Mackertich,
  • Brygid Sawitsky,
  • Daniel Balderrama,
  • Adam Carnes,
  • Ek Han Tan,
  • Paul Collins

摘要

Potato cytoplasm type has been linked to fertility and disease resistance traits, making it an important consideration in potato breeding programs. Previous research has developed genetic markers to distinguish the six different cytoplasm types (P, T, W, D, A, and M). These markers were used to identify the different cytoplasm types present in the USDA-ARS Potato Variety Development Program for the Eastern U.S. Tetraploid families were predominantly type T, with a significant number of type D. Diploid families had a large proportion of type P, reflecting the contribution of Solanum tuberosum Group Phureja. Primary dihaploids, being derived from tetraploids, had a similar cytoplasm composition as the tetraploid families, predominantly type T and D. As has been previously reported, cytoplasm type was correlated with male fertility. The USDA-ARS Potato Variety Development Program for the Eastern U.S. will use the cytotype data to direct breeding efforts going forward.